Question

On expansion of (a + b)2 and its corollaries 1. Expand the squares of the following: (a) 4x + y (b) 5a + 3b​

Answer 1

Step-by-step explanation:

(a) 4x + y

(4x + y)²

(4x)² + 2(4x)(y) + (y)²

16x² + 8xy + y²

(b) 5a + 3b

(5a + 3b)²

(5a)² + 2(5a)(3b) + (3b)²

25a² + 30ab + 9b²